<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>jQuery选择器之基本筛选选择器</title>
	<script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
</head>
<body>
	<h2>基本筛选器</h2>
    <h3>:first/:last/:even/:odd</h3>
    <div class="left">
        <div class="div">
            <p>div:first</p>
            <p>:even</p>
        </div>
        <div class="div">
            <p>:odd</p>
        </div>
        <div class="div">
            <p>:even</p>
        </div>
        <div class="div">
            <p>:odd</p>
        </div>
        <div class="div">
            <p>:even</p>
        </div>
        <div class="div">
            <p>div:last</p>
            <p>:odd</p>
        </div>
    </div>
    <script type="text/javascript">
    //找到第一个div
    $(".div:first").css("color", "#CD00CD");
    </script>
    
    <script type="text/javascript">
    //找到最后一个div
    $(".div:last").css("color", "#CD00CD");
    </script>
    
    <script type="text/javascript">
    //:even 选择所引值为偶数的元素，从 0 开始计数
    $(".div:even").css("border", "3px groove red");
    </script>
    
    <script type="text/javascript">
    //:odd 选择所引值为奇数的元素，从 0 开始计数
    $(".div:odd").css("border", "3px groove blue");
    </script>
    
    
    <h3>:eq/:gt/:lt</h3>
    <div class="left">
        <div class="aaron">
            <p>:lt(3)</p>
        </div>
        <div class="aaron">
            <p>:lt(3)</p>
        </div>
        <div class="aaron">
            <p>:eq(2)</p>
        </div>
        <div class="aaron">
        </div>
        <div class="aaron">
            <p>:gt(3)</p>
        </div>
        <div class="aaron">
            <p>:gt(3)</p>
        </div>
    </div>
    <script type="text/javascript">
    //:eq
    //选择单个
    $(".aaron:eq(2)").css("border", "3px groove blue");
    </script>
    
    <script type="text/javascript">
    //:gt 选择匹配集合中所有索引值大于给定index参数的元素
    $(".aaron.gt(3)").css("border", "3px groove blue");
    </script>
    
     <script type="text/javascript">
    //:lt 选择匹配集合中所有索引值小于给定index参数的元素
    //与:gt相反
    $(".aaron:lt(2)").css("color", "#CD00CD");
    </script>
    
    <h3>:not</h3>
    <div class="left">
        <div>
            <input type="checkbox" name="a" />
            <p>Aaron</p>
        </div>
        <div>
            <input type="checkbox" name="b" />
            <p>慕课</p>
        </div>
        <div>
            <input type="checkbox" name="c" checked="checked" />
            <p>其他</p>
        </div>
    </div>
    <script type="text/javascript">
        //:not 选择所有元素去除不匹配给定的选择器的元素
        //选中所有紧接着没有checked属性的input元素后的p元素，赋予颜色
        $("input:not(:checked) + p").css("background-color", "#CD00CD");
    </script>
</body>
</html>